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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Binoculars | $36,838,451 | $34,810,025 | $30,226,601 | $45,348,772 | $38,736,462 | $38,096,916 | $41,987,615 |
| Monoculars & oth. optical telescopes; oth. astronomical instr. (excl. instr ... | $2,155,921 | $3,981,832 | $6,436,183 | $5,100,495 | $5,155,876 | $6,270,210 | $7,664,258 |
| Parts & accessories, incl. mountings, of the instr. of 90.05 | $12,167,351 | $13,832,647 | $10,452,747 | $12,456,534 | $18,225,925 | $19,167,466 | $19,476,231 |
| Total | $51,161,723 | $52,624,504 | $47,115,531 | $62,905,801 | $62,118,263 | $63,534,592 | $69,128,104 |
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